Tack-driving implement



(No Model.)

M. BROGK.

TAoK DRIVJING IMPLEMBNT.

Patented Oct. 14, .1884.

Jysi.

iNrTE SrA'rEs MATTHIAS BROOK, OFBOSTON, MASSACHUSETTS, ASSIGNOR TO THE MOKAY & COPELAND LASTING MACHINE OOMPANY, OF PORTLAND, MAINE.

TACK-DRIVING IMPLEMENT.

CLZCIPCA TION' forming part of Letters Patent NO. 306,671, dated October le, 18842 Application filed August 4, 1884. (No model.)

To aZZ whom, it mayV .co/warm:

Be it known that I, MATTHIAs BRocK, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Tacky Driving Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its obj ect the produc- Io tion of a simple and efficient tack-driving apparatus especially applicable for lasting boots and shoes, the apparatus being adapted to receive and drive headed tacks connected together by means of a paper or other strip.

The particular features in which my invention consists will be hereinafter fully described, and pointed out in the claims at the end of this specification.

Figure l is a front elevation of a tack-driving apparatus embodying my invention,`the

nsual hand-piece, which is grasped by the operator so that his hand will not be caught by the moving parts, being removed. Fig. 2 is a partial rear elevation of Fig. 1. Fig. 3 is a left-hand side elevation of Fig. 1. Fig. tis a vertical central section of Fig. 1. Fig. 5 is a top view of the nipple-holder and feeding device, the said figure showing the die-Closer and tack-detainer in section. Fig. 6 is avertical central section of the nipple-holder, and Fig.

7 is a detail of the feed-lever.

The tubular case A, the driver-carrying plunger A', the Spring A, and the driver A3 are substantially as usual, excepting that the case has at its upper end a recess, a, which, when desired, is made to receive aprojection, a'z, on a ring or collar, (63, surrounding the driver-carrying plunger AZ below its head a In driving nails into the -uppers of boots 40 and shoes while the latter are being lasted or connected with the inner soles, it becomes necessary, especially in that class of work to be hand-sewed, that the lasting-tacks be withdrawn as the welt is being sewed to the upper and inner sole. To accommodate for this the tacks must not be fully driven, thus leaving their heads projecting sufficientlyabove the work to be readily seized and Withdrawn. In other elasses of work it is desirable to drive the tacks fully and'clinch their points driver-plunger is forced downward, the tacks will be fully drivcn; but by tu rning the collar a3 so that the projection ai will strike the top of the case at one side of the said recess a the extent of the descent of the driver-plunger will be shortened and the tack will not be fully driven, the extent to which the heads of the tacks will project above the upper depending upon the depth of the projection a, The eollar provided with the projection, in connection with the recess at the upper end of the case, forms a device or means for fully or partially driving the tacks. The dr'iver'- plunger Within the case is provided with a 70 bolt or stud, B, which projeets out through a slot in the side of the case, the said bolt being provided with a guide-block, b, and a rollerstud, b', the former moving in the slot of the case, and the latter traveling in the Cam-slot 122 of the feed-lever C, pivoted at O' on the case A. The nipple D, through which the tack is driven into the upper or stock being operated upon, has one end extended upiward (see Figs. 4 and 6) to form a die, d, into the side of which the tacks are fed one at a time, and down through which and the nipple the tacks are driven by the driver A, the head of the tack and the paper or other strip or web holding the tacks at such time restingupon the top of the die. 83 The combined nipple and die, composed of steel and integral, is connected with the nippleholder E by means of a cross-pin, (12. The nipple-holder has side walls or pieces, e e, which are made to embraee the thickened lower end, go A5, of the case, the connection being made by bolts (P ds. The nipple-holder is slotted or grooved longitudinally, as atdt, for the reception of the shanks of the connectedtacks. The die is cut through at one side to coincide with 9 5 the slot d Pivoted upon the case by a pin,

e', are two levers, one of which (marked f) is denominated as the die-closer, while the other one, f', I denominate as the tack-detainen Each of these levers is acted upon by rco a spiral or other suitable spring, 2, which normally keeps the inwardly-projecting lower ends of the said levers pressed into the central space of the nipple-holder. The nipple-holder 5 E has at its front side a slot, 3, into which projects lthe end 4: of the feeding device F,

l (shown best in Fig. 5,) pivoted at f3 on a slide,

6, and normally acted upon by a Spring, J, which keeps the end etof the feeding device Io in the said slot` and so as to engage the shanks of the tacks in the groove (P, and feed the tacks positively alongin the said groove and into the die d through its side Opening. This slide 6, fitted into the slot 3, has atits outer side acollared stud, 7, which is made to project through an Opening, 12, in the side piece, c, of the nippie-holder E, the said collared stud having applied to its reduced outer end a swivelblock, 8, which is made to enter the diagonal slot or way 13 in the lower end of the lever O, the latter, when operated by the bolt or stud B,moving the feeding device positively. The feeding device, acting against the rear side of the shank of a tack,carries the same forward,

2 5 cansing,` the front side of the shank, by its action against the heveled inwardly-tnrned ends of the tack-detainer and die-closer, respectively, in succession, to movev backward, thus permitting` the tack so acted upon to pass both of them and be placed in the die.

of a tack having been placed in the die, the clie c1oser,acted upon by one of the springs 2, closes the Opening therein at the rear side of the shank of the ta'ck as the fceding device is 3 5 retracted, and at the same time the tack-holder acts against therear side of thenext tack back of the one in the die and ready to be driven, and prevents any such rctrograde movement scribed.

The shank of the tack-strip during the backward movement of the feeding device, which would tend 40 to place the tack then in the die out of central position with relation thereto, so as to prevent the driver on its next descent from striking the head of the tack squarely.

I claim- 1. The nippleholder and nipple and slotted die, combined with the die-closei` and a Spring to operate it in one direction, substantially as described.

2. The nipple-holder and nipple and slotted die, combined with the* die-Closer and tackdetainer, to operateV each substantially as described.

3. The case, the driver plnnger and its bolt or stud B, and the slotted feed-actuating 5 5 lever and the nipple-holder, combined with the slide 6 and its attached pivoted feeding device or pawl F, adapted to extend through a slot in the nipple-holder, snbstantially as de- 4. In an apparatns to drive tacks, a case provided with a notch or recess, and adriverplnnger and attached driver, combincd with a rotating collar provided with a projection, and adapted by its movement to insnrc the driving,` of the whole or part of the length of the tack into the stock, snbstantially as described.

In testiniony whercof I have signed my name to this specification in thepresence of two subscribing witnesses.

MATTI-IIAS BROCK.

XVit-nesses:

G. W. GREGORY, B. J. NoYns. 

